For the patties
01 -
1 lb (450 g) ground beef, 80/20 lean
02 -
1/3 cup plain bread crumbs
03 -
1 large egg, beaten
04 -
1 tablespoon Worcestershire sauce
05 -
1/2 teaspoon garlic powder
06 -
1/2 teaspoon onion powder
07 -
1/2 teaspoon salt
08 -
1/4 teaspoon black pepper
09 -
1 tablespoon olive oil
For the skillet and gravy
10 -
1 lb (450 g) baby potatoes, halved or quartered
11 -
1 tablespoon unsalted butter
12 -
1 medium yellow onion, thinly sliced
13 -
8 oz (225 g) cremini mushrooms, sliced
14 -
2 tablespoons all-purpose flour
15 -
1 1/2 cups low-sodium beef broth
16 -
1 teaspoon Worcestershire sauce
17 -
Salt and black pepper to taste
18 -
Fresh parsley, chopped (optional)